EP2728765A3 - Power feeding path switching device and power feeding system - Google Patents

Power feeding path switching device and power feeding system Download PDF

Info

Publication number
EP2728765A3
EP2728765A3 EP13181329.7A EP13181329A EP2728765A3 EP 2728765 A3 EP2728765 A3 EP 2728765A3 EP 13181329 A EP13181329 A EP 13181329A EP 2728765 A3 EP2728765 A3 EP 2728765A3
Authority
EP
European Patent Office
Prior art keywords
power feeding
relay
feeding path
switching device
path switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13181329.7A
Other languages
German (de)
French (fr)
Other versions
EP2728765A2 (en
Inventor
Masahiro Agata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of EP2728765A2 publication Critical patent/EP2728765A2/en
Publication of EP2728765A3 publication Critical patent/EP2728765A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power
    • H04B10/808—Electrical power feeding of an optical transmission system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Relay Circuits (AREA)

Abstract

A power feeding path switching device includes a relay (RL1). The relay becomes excited when a power supply current flows across the relay in a first direction of a power feeding path, and becomes unexcited when a power supply current flows across the relay in a second direction opposite to the first direction, or when a power supply current does not flow across the relay. The relay in an unexcited state connects the power feeding path with ground, and the relay in an excited state does not connect the power feeding path with ground.
EP13181329.7A 2012-10-31 2013-08-22 Power feeding path switching device and power feeding system Withdrawn EP2728765A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012240848A JP6044274B2 (en) 2012-10-31 2012-10-31 Feed path switching device and feed system

Publications (2)

Publication Number Publication Date
EP2728765A2 EP2728765A2 (en) 2014-05-07
EP2728765A3 true EP2728765A3 (en) 2018-01-03

Family

ID=49110983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13181329.7A Withdrawn EP2728765A3 (en) 2012-10-31 2013-08-22 Power feeding path switching device and power feeding system

Country Status (3)

Country Link
US (1) US20140117775A1 (en)
EP (1) EP2728765A3 (en)
JP (1) JP6044274B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10110321B2 (en) * 2017-03-16 2018-10-23 Tyco Electronics Subsea Communications Llc Techniques for providing adaptive power distribution using a multi-node network of power feed branching units (PFBUs) and an undersea optical communication system using same
JP7151768B2 (en) * 2018-07-24 2022-10-12 日本電気株式会社 Communication system, monitoring device and monitoring method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299721A (en) * 1987-05-27 1988-12-07 Nippon Telegr & Teleph Corp <Ntt> Power supply switching system for submarine trunk transmission line
JPH04256225A (en) * 1991-02-07 1992-09-10 Fujitsu Ltd Feeding method and feed line switching circuit for sea-bottom cable communication system
US5644466A (en) * 1994-03-17 1997-07-01 Fujitsu Limited Power feed circuit for use in a submarine cable branching unit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036938A (en) * 1973-08-09 1975-04-07
JPS5799042A (en) * 1980-12-11 1982-06-19 Nec Corp Submarine relay system
JP2624499B2 (en) 1988-02-29 1997-06-25 日本電信電話株式会社 Power supply branch switching method and switching device for submarine cable transmission line
JP2805197B2 (en) * 1988-05-16 1998-09-30 日本電信電話株式会社 Power supply switching method for submarine relay transmission line
JPH0436339U (en) 1990-07-20 1992-03-26
JPH04304716A (en) * 1991-04-02 1992-10-28 Nec Corp Submarine cable system power feeding system
JPH05327561A (en) * 1992-05-20 1993-12-10 Fujitsu Ltd Feeding path switching circuit
US6211632B1 (en) * 1999-09-08 2001-04-03 Rhine Electronic Co., Ltd. Direction control device for a ceiling fan

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299721A (en) * 1987-05-27 1988-12-07 Nippon Telegr & Teleph Corp <Ntt> Power supply switching system for submarine trunk transmission line
JPH04256225A (en) * 1991-02-07 1992-09-10 Fujitsu Ltd Feeding method and feed line switching circuit for sea-bottom cable communication system
US5644466A (en) * 1994-03-17 1997-07-01 Fujitsu Limited Power feed circuit for use in a submarine cable branching unit

Also Published As

Publication number Publication date
JP6044274B2 (en) 2016-12-14
JP2014093539A (en) 2014-05-19
EP2728765A2 (en) 2014-05-07
US20140117775A1 (en) 2014-05-01

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